Hi >-force Lyx to add my \usepackage{} command afterthis line? Is this possible?
You can try using the \AtBeginDocument{} described in http://wiki.lyx.org/FAQ/Unsorted >-use a workaround where I try to define in the custom package >showcaptionsetup, so that the line does not run? You can try to put your command in an ERT box as the first thing in the LyX document. Might not work, depending on the environment. hth, Ingar Pareliussen